Hear
the first audio recordings from the sea's deepest pointsFor the first time we have lowered a microphone
into the Challenger Deep, the deepest known ocean trench. It picked
up some surprising noises.
For the first time, scientists have obtained audio recordings
from 7 miles (11km) below sea level in Challenger Deep, the deepest
part of the Mariana Trench, south-west of Guam. They reveal a
soundscape rich with the rumble of earthquakes, the deep moans
of whales – and the mechanical whirr of ships. Read
More

3.2 Millimeters: A Troubling Rise
in Sea LevelSea levels are rising, and rising faster every
year.

According to the latest report of the Intergovernmental Panel
on Climate Change, sea levels rose an average of 1.7 millimeters
a year during the 20th century. Some areas have had larger rises
than others, and measurements vary from year to year at different
locations.

Measuring sea level is difficult. Scientists use tidal gauges
and satellite altimeter data to measure these changes, and there
are some questions about the precision of these tools. Variations
in land level complicate matters further; it is often difficult
to distinguish rising seas from falling land. And as water warms,
it expands.

Still, there is no question about the basic facts. Since 1993,
the average rate of increase has nearly doubled, to 3.2 millimeters
a year.Read
more

Why we want to cover oceans ?
We are not a science site nor are we a site on seas & oceans.

We are a development site and know that a lot of solid wste or
nuclear waste is dumped in seans and oceans and it not only affects
the country and its neghbouring countries but all of us. The waste
which unfortunatel y contains plastic is eaten by sea animals
or animals on the land on the nearby regions and it affects their
life. (See Midway Islands)

Oceans
An ocean is a body of saline water that composes much of a planet's
hydrosphere. On Earth, an ocean is one of the major conventional
divisions of the World Ocean, which occupies two-thirds of the
planet's surface. These are, in descending order by area, the
Pacific, Atlantic, Indian, Southern, and Arctic Oceans. The word
sea is often used interchangeably with "ocean" in American
English but, strictly speaking, a sea is a body of saline water
(generally a division of the world ocean) partly or fully enclosed
by land.

Saline water covers approximately 72% of the planet's surface
(~3.6×108 km2) and is customarily divided into several principal
oceans and smaller seas, with the ocean covering approximately
71% of the Earth's surface. The ocean contains 97% of the Earth's
water, and oceanographers have stated that only 5% of the World
Ocean has been explored. The total volume is approximately 1.3
billion cubic kilometers (310 million cu mi) with an average depth
of 3,682 meters (12,080 ft).

Because it is the principal component of Earth's hydrosphere,
the world ocean is integral to all known life, forms part of the
carbon cycle, and influences climate and weather patterns. It
is the habitat of 230,000 known species, although much of the
oceans depths remain unexplored, and over two million marine species
are estimated to exist. The origin of Earth's oceans remains unknown;
oceans are believed to have formed in the Hadean period and may
have been the impetus for the emergence of life.

Extra-terrestrial oceans may be composed of water or other elements
and compounds. The only confirmed large stable bodies of extraterrestrial
surface liquids are the lakes of Titan, although there is evidence
for the existence of oceans elsewhere in the Solar System. Early
in their geologic histories, Mars and Venus are theorized to have
had large water oceans. The Mars ocean hypothesis suggests that
nearly a third of the surface of Mars was once covered by water,
and a runaway greenhouse effect may have boiled away the global
ocean of Venus. Compounds such as salts and ammonia dissolved
in water lower its freezing point, so that water might exist in
large quantities in extraterrestrial environments as brine or
convecting ice. Unconfirmed oceans are speculated beneath the
surface of many dwarf planets and natural satellites; notably,
the ocean of Europa is believed to have over twice the water volume
of Earth. The Solar System's gas giant planets are also believed
to possess liquid atmospheric layers of yet to be confirmed compositions.
Oceans may also exist on exoplanets and exomoons, including surface
oceans of liquid water within a circumstellar habitable zone.
Ocean planets are a hypothetical type of planet with a surface
completely covered with liquid.Source